5655166001066 has 4 divisors (see below), whose sum is σ = 8482749001602. Its totient is φ = 2827583000532.

The previous prime is 5655166001063. The next prime is 5655166001083. The reversal of 5655166001066 is 6601006615565.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 5632956358225 + 22209642841 = 2373385^2 + 149029^2 .

It is a super-2 number, since 2×5655166001066² (a number of 26 digits) contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 5655166001066.

It is not an unprimeable number, because it can be changed into a prime (5655166001063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1413791500265 + ... + 1413791500268.

Almost surely, 2^{5655166001066} is an apocalyptic number.

5655166001066 is a deficient number, since it is larger than the sum of its proper divisors (2827583000536).

5655166001066 is a wasteful number, since it uses less digits than its factorization.

5655166001066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2827583000535.

The product of its (nonzero) digits is 972000, while the sum is 47.

The spelling of 5655166001066 in words is "five trillion, six hundred fifty-five billion, one hundred sixty-six million, one thousand, sixty-six".